Application Data

Damper Sideplate and Sleeve Dimensional Data

The drawings below illustrate the factory standard sideplate and sleeve mountings for the SMD-401M. The standard "A" dimensions listed in the table provide adequate space for the mounting of actuators and controls.

If space constraints are a problem the "A" dimension can be varied between 5 3⁄8 in. (136mm) and 12 in. (305mm).

Sideplate

6 in.

		"A" Dimension

in. (mm)	Sleeve			Sideplate

	Standard		Maximum
	Standard		Maximum

All Dampers*	7 3/16 (183)		12 (305)	6 3/16 (157)

When height is	11 3/16		12	10 3/16
11 in. (279) or	(284)		(305)	(259)
less with OCI

*With the exception of dampers 11 in. (279mm) high or less (12 in. (305mm)high or less if width is greater than 64 in. (1625mm)) with OCI option.

Sleeve							11/2" max.

33/4"

Varies	53/8"

5 in.

12 in.**

**On dampers 11 in. (279mm) high or less (12 in. (305mm)high or less if width is greater than 64 in. (1625mm)) with OCI option, sideplate is 16 in.

(406mm)

A 5"

Sleeve Length

T*	Space Envelopes Required for
	Space Envelopes Required for
	Actuators and Accessories

Externally mounted actuators always require space outside of the damper sideplate or sleeve. The “S” dimension illustrates the clearance required for various available actuators.

On dampers less than 18 in. (457mm) high, actuators may also require clearances above and/or below the sideplate or sleeve. “B” and “T” dimensions are worst case clearance requirements for some dampers less than 18 in. (457mm) high. All damper sizes under 18 in. (457mm) high do not require these worst case clearances. If space availability above or below the damper sleeve is limited, each damper size should be individually evaluated.

Actuator Type/Model	B*	T*	S

	With OCI	With OCI
	With OCI	With OCI

	Pneumatic
331-2976	2 1/2 in. (64mm)	5 1/4 in. (133mm)	6 in. (152m)

* For dampers 18 in.(457mm) or more in height these dimensions are 0 in.

1 Note: This actuator requires field calibration for the zero and span setting.

SMD-401M specifications

The Greenheck Fan SMD-401M is a highly efficient and versatile air movement solution designed for a variety of commercial and industrial applications. As part of Greenheck's extensive lineup of fans, the SMD-401M combines advanced engineering with innovative technology to meet the demanding needs of HVAC systems.

One of the significant features of the SMD-401M is its energy efficiency. The fan incorporates a high-performance motor that is designed to reduce energy consumption while delivering optimal airflow. This makes it an excellent choice for facilities looking to lower operational costs and reduce their carbon footprint. Additionally, the fan is equipped with a direct-drive design, which enhances reliability by eliminating the need for belts and pulleys, reducing wear and maintenance for the user.

The SMD-401M also includes a durable construction using high-quality materials that ensure longevity and resistance to the elements. The casing is designed to withstand harsh environmental conditions, which makes this fan suitable for outdoor installation. The fan is also lightweight, allowing for easier handling and installation, further adding to its versatility.

Another defining characteristic of the SMD-401M is its quiet operation. The fan is engineered to minimize noise emissions, which is crucial for maintaining a comfortable environment in commercial spaces like offices, schools, or retail establishments. This acoustic performance does not come at the expense of airflow, as the SMD-401M is capable of delivering substantial volumes of air effectively.

Technologically, the SMD-401M features advanced controls that allow for precise adjustments to airflow rates and operational settings. This adaptability enables users to tailor the fan’s performance to specific requirements, enhancing overall system efficiency. Integration with building management systems is also supported, allowing for seamless connectivity and monitoring.

In summary, the Greenheck Fan SMD-401M stands out for its energy efficiency, low noise operation, durable design, and advanced control features. Its ability to perform in diverse environments while delivering reliable service makes it an exceptional choice for engineers, contractors, and facility managers alike. Whether used in ventilation systems or exhaust applications, the SMD-401M exemplifies Greenheck's commitment to quality, performance, and sustainability in air movement solutions.